Which of the Following Patterns of Information Flow is Unique

Question

Which of the following patterns of information flow is unique to retroviruses within a cell?
A)RNA → protein
B)protein → DNA
C)RNA → DNA
D)DNA → RNA
E)protein → RNA

Accepted Answer

Retroviruses, such as HIV, have a unique replication process where they reverse transcribe their RNA genome into DNA once they enter a host cell. This RNA → DNA information flow is distinct to retroviruses and is facilitated by the enzyme reverse transcriptase.